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Add WASI platform support.

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This includes the following significant changes:
  * Patching ezsat and minisat to disable resource limiting code
    on WASM/WASI, since the POSIX functions they use are unavailable.
  * Adding a new definition, YOSYS_DISABLE_SPAWN, present if platform
    does not support spawning subprocesses (i.e. Emscripten or WASI).
    This definition hides the definition of `run_command()`.
  * Adding a new Makefile flag, DISABLE_SPAWN, present in the same
    condition. This flag disables all passes that require spawning
    subprocesses for their function.
This commit is contained in:
whitequark 2019-11-11 09:23:06 +00:00
parent bc380b0b56
commit b43c282e4e
17 changed files with 167 additions and 30 deletions
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17
kernel/driver.cc
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@ -155,6 +155,19 @@ int yosys_history_offset = 0;
std::string yosys_history_file;
#endif
#if defined(__wasm)
extern "C" {
// FIXME: WASI does not currently support exceptions.
void* __cxa_allocate_exception(size_t thrown_size) throw() {
return malloc(thrown_size);
}
bool __cxa_uncaught_exception() throw();
void __cxa_throw(void* thrown_exception, struct std::type_info * tinfo, void (*dest)(void*)) {
std::terminate();
}
}
#endif
void yosys_atexit()
{
#if defined(YOSYS_ENABLE_READLINE) || defined(YOSYS_ENABLE_EDITLINE)
@ -587,9 +600,11 @@ int main(int argc, char **argv)
ru_buffer.ru_utime.tv_usec += ru_buffer_children.ru_utime.tv_usec;
ru_buffer.ru_stime.tv_sec += ru_buffer_children.ru_stime.tv_sec;
ru_buffer.ru_stime.tv_usec += ru_buffer_children.ru_stime.tv_usec;
#if defined(__linux__) || defined(__FreeBSD__)
ru_buffer.ru_maxrss = std::max(ru_buffer.ru_maxrss, ru_buffer_children.ru_maxrss);
#endif
}
# if defined(__linux__) || defined(__FreeBSD__)
#if defined(__linux__) || defined(__FreeBSD__)
meminfo = stringf(", MEM: %.2f MB peak",
ru_buffer.ru_maxrss / 1024.0);
#endif